How to Migrate User account License on Office 365 using PowerShell

If you or your company has contracted an Office 365 Microsoft's plan and has attributed this plan / license its user and then want to migrate these users to another license, follow the steps below:

1. Find out the names of the licenses you already have hired
for this use this command: Get-MsolAccountSku
2.Conect via powershell to your Office 365 ambinte
3. Use this script filling the information of variables


$OldLicense = "Name of old License"
$NewLicense = "Name of new License"

$users = Get-MsolUser -All
foreach($user in $users)
{
Write-Host $user.UserPrincipalName
Set-MsolUserLicense -AddLicenses $NewLicense -RemoveLicenses $OldLicense -UserPrincipalName $user.UserPrincipalName
Write-Host "User updated!"
}